How often does the plastic crusher get rid of the knife?
The material is too big, the screws aren't tight enough, the screws aren't tight, and so on
After the machine is used for a period of time, the screw is often removed, it may hurt the thread, the pressure plate is not tight, it is recommended to replace the big steel cap screw.
Bolt tooth nut is not equipped with spring washer. It is easy to loose bolts
